Elastic FX vs VAPolyMkII
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Elastic FX
This app is a versatile multi-effect audio processor with four channels, offering extensive sound shaping and routing capabilities. It allows users to apply up to 40 different stereo effects to various audio sources, including microphones, instruments, and imported sound files. Features like an XY-Pad for intuitive control and automation enhance its creative potential.
- 4-channel multi-effect processor
- 40 stereo effects (Modulation, Pitch, Distortion, Filter, Delay, Reverb, Others)
- Advanced audio routing options
- XY-Pad for effect control and automation
- Master effect section with EQ and compressor
- Inter-App Audio and Audiobus 3 support
- MIDI control and preset management
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EFX is a 4 channels multi-effect processor, that's easy and intuitive to play, but offers complex options to shape the sound and to route the audio effects stream. Connect EFX to any input source, like the devices built in microphone, an external keyboard or guitar (iPad soundcard needed) or to your favorite iOS drum machine or synthesizer via Inter-App Audio or Audiobus. Or import a soundfile into the app and alienate it with with up to 4 different effects at the same time! -------------------------------------------------------------- FEATURES: - Multi-effect app created by the developers of Elastic Drums - 4 effect units with different routing options - Choose one of 40 available stereo effects in each effect unit - Broad range of different effects of the following categories: Modulation, Pitch, Distortion, Filter, Delay, Reverb, Others - Additional master effect section with level meters, 3 band equalizer, compressor, stutter fx - XY-Pad to easily control the most important effect values (Kaoss Pad style) - Possibility to automate/record the XY-Pad tweaks (1,2,4,8,16 bars length) - Automated tweaks and some effects (PingPong Delay) get played in sync via Ableton Link/Inter-App Audio - Audiobus 3 support - Audiobus state save - Audiobus remote control - Inter-App Audio support - Simple audio player to test the effects with audiofiles - Tweak the most important parameters via Midi, Midi learn option - Switch user-presets with Midi Program Change messages - Save, load and share user presets FUTURE PLANS: - More effects
VAPolyMkII
This virtual analog synthesizer offers a 16-voice bitimbral polyphonic sound engine with two distinct filter models and extensive modulation options. It includes a built-in sequencer, various effects, and supports AudioUnit Extension for integration with DAWs. Projects can be synced across iPhone, iPad, and Mac via iCloud.
- 16-voice bitimbral polyphonic synthesizer
- Two analog-modeled filter types
- Extensive modulation capabilities
- Built-in piano roll sequencer
- Multiple audio effects
- AudioUnit Extension (AUv3) support
- iCloud Drive project syncing
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VAPolyMkII is a virtual analog bitimbral polyphonic synthesizer for iPhone, iPad and Mac. It features 16 voice synthesizer, effects, sequencer and audio visualization tools. It operates as a stand alone or as an AudioUnit Extension (AUv3). Stand Alone supports Ableton Link, MIDI and audio file export. The synthesizer consists of two 8 voice synthesizer, which features two oscillators, two ADSR envelopes, resonant high pass and low pass filter and an amplifier per voice. The oscillators features continuously variable wave shape and wide variety of modulation. The filters are modeled on the Sallen-Key filter circuit and cascaded OTA filter circuit for classic analog sound. The Effects include delay, chorus, flanger, reverb, eq and compressor. The sequencer features piano roll and parameter automation editor to program 16 bar pattern per clip. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. - Main Features - Virtual analog 16 voice bitimbral polyphonic synthesizer Two type of Lowpass filter, cascaded OTA model and Sallen-key model. Patch points for modulation. Support MIDI 2.0 New User Interface built by SwiftUI for improved performance. Built-in Sequencer. 16 bar patterns per clip. Total 8 clips. Piano Roll and Parameter automation. Support Audio Unit Extension (AUv3) Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Ableton Link, Bluetooth MIDI, MIDI In / Out. - System Requirements - A13 Fusion or above is recommended. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.
Screenshots
Verdict
The clearest difference is update cadence: VAPolyMkII at weekly against Elastic FX's every 5 weeks. Elastic FX's advantage is price ($9.99 vs $14.99) and ratings volume (34 vs 11). On rating, review sentiment, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Elastic FX costs $9.99 and VAPolyMkII $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for Elastic FX against 4.5 for VAPolyMkII. Both are backed by a comparable volume of ratings — 34 and 11 respectively. Written reviews are what separate them: 69% of Elastic FX's written reviews are positive against 67% of VAPolyMkII's.
Elastic FX ships an update every 5 weeks, VAPolyMkII weekly. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.
| Parameter | Elastic FX | VAPolyMkII |
|---|---|---|
| Price | $9.99 — better | $14.99 |
| Rating | 4.6 (34 ratings) — better | 4.5 (11 ratings) |
| Positive reviews | 69.2% of reviews — better | 66.7% of reviews |
| Number of ratings | 34 — better | 11 |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 11.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 34 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Oliver Greschke (DE) | Ryo Togawa |
Customer experience
Elastic FX
VAPolyMkII
In-app purchases
Elastic FX
No in-app purchases
VAPolyMkII
No in-app purchases









